712731 has 8 divisors (see below), whose sum is σ = 976144. Its totient is φ = 462240.

The previous prime is 712717. The next prime is 712739. The reversal of 712731 is 137217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 712731 - 2⁷ = 712603 is a prime.

It is a super-2 number, since 2×712731² = 1015970956722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 712698 and 712707.

It is not an unprimeable number, because it can be changed into a prime (712739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3100 + ... + 3321.

It is an arithmetic number, because the mean of its divisors is an integer number (122018).

2⁷¹²⁷³¹ is an apocalyptic number.

712731 is a deficient number, since it is larger than the sum of its proper divisors (263413).

712731 is a wasteful number, since it uses less digits than its factorization.

712731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6461.

The product of its digits is 294, while the sum is 21.

The square root of 712731 is about 844.2339723086. The cubic root of 712731 is about 89.3254507166.

Adding to 712731 its reverse (137217), we get a palindrome (849948).

The spelling of 712731 in words is "seven hundred twelve thousand, seven hundred thirty-one".